The French broadcaster has ordered a one-hour documentary from Pernel Media that will take viewers behind the scenes of the city's 133-mile subway system. (Pictured: exec producer Samuel Kissous)

France 5 has ordered a documentary about the inner workings of the Paris subway system from indie producer Pernel Media.

The hour-long Paris Métro: A City Under a City will go behind-the-scenes in the 133-mile underground public transportation network to meet workers and expose little-seen areas.

The commission is the latest in a series of Pernel-produced docs about Parisian institutions. France 5 recently aired Champs Elysées: The Most Beautiful Avenue in the World and Pernel has been named the official production partner of luxury department store Printemps for its 150th anniversary year.